R&S SMJ100A, Operating Manual

Page: 761 / 874

Remote Control Commands
R&S
®
SMJ100A
745 Operating Manual 1403.7458.32 ─ 14
Example: LFO:FREQ:STAR
sets the start frequency to 2 kHz.
LFO:FREQ:STOP
sets the stop frequency to 20 kHz.
LFO:SWE:SPAC LIN
sets linear sweep spacing.
LFO:SWE:STEP 2 kHz
sets the sweep step width to 2 kHz. The number of sweep steps
for linear sweep spacing (
POINts
) is automatically set to 11.
Manual operation: See "Step Lin/Log - LF Sweep" on page 259
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic
<Logarithmic>
Sets the logarithmically determined sweep step size for the LF frequency sweep. It is
expressed in percent and you must enter the
value and the unit PCT with the com-
mand.
The frequency is increased by a logarithmically calculated fraction of the current fre-
quency according to:
step_log
step+1
= f
step
+ step_log
step
x f
step
f
step+1
= f
step
+ step_log
step+1
with f
STARt
< f
STOP
and step = the current number of the sweep steps
This parameter correlates with the number of steps LFO:SWE[:FREQ]:POIN within the
sweep range as follows:
freq_points = ((log f
STOP
- log f
STARt
) / log step_log) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Logarithmic> float
Range:
0.01 to 100
Increment: 0.01
*RST:
1
Example: LFO:FREQ:STAR
sets the start frequency to 1 kHz.
LFO:FREQ:STOP
sets the stop frequency to 100 kHz.
LFO:SWE:SPAC LOG
sets logarithmic sweep spacing.
LFO:SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance.
Manual operation: See "Step Lin/Log - LF Sweep" on page 259
SOURce Subsystem